<span style="color: #222222;">A magistrate court in Chennai today directed former Union Finance Minister P Chidambaram's family members to appear in the court on 20th of next month without fail in connection with a black money case. </span><br />'' <br />'' <span style="color: #222222;">The court ordered the personal appearance of Chidambaram's wife Nalini, son Karti and his wife Srinidhi next month since they failed to do so today.</span><br />'' <br />'' <span style="color: #222222;">According to the Income Tax Department, Karti had not disclosed his bank account in Metro Bank, the UK, and investments he had made in Nano Holdings LLC, USA. It said, Karti had failed to disclose investments made by Chess Global Advisory, a company co-owned by him, which is an offence under the Black Money Act.</span><br />'' <br />'' <span style="color: #222222;">P Chidambaram and his family members appeared before the court on June 25 and filed a petition seeking to dispense them from personal appearance. </span><br />''